Connection · one ticket · schedule Jun 6 – Jul 31, 2026 · records Aug 2025 – Jul 2026

Houston → Chattanooga via Detroit: arrives on time 45%

15:27 IAH → 19:15 DTW

DL 1865 · Delta · 2h 48m · 67% on time, 0.0% cancelled
55m layover in Detroit (DTW) · 45 min minimum on one ticket
20:10 DTW → 22:02 CHA

DL 4894 · Delta, flown by Endeavor · 1h 52m · 78% on time, 0.8% cancelled

Total trip 5h 35m, scheduled departure to arrival (Chattanooga is 1 h ahead of Houston). Times are local. Both flew on 48 of the last 56 days.

Makes the connection58%The first flight arrived more than 10 minutes late on 42% of the days it flew: too late for the 45-minute minimum connection on a 55m layover.

Arrives on time45%First flight not cancelled (0.0% are) × connection made (58%) × second flight not cancelled (0.8% are) and within 15 minutes (78%).

Total trip5h 35mIAH 15:27 to CHA 22:02, layover included

Tight connection: often missed. The first flight is late enough to miss it on more than 1 day in 4.

Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.